1 files changed, 122 insertions, 0 deletions
diff --git a/demos/spectrum/3rdparty/fftreal/OscSinCos.hpp b/demos/spectrum/3rdparty/fftreal/OscSinCos.hpp
new file mode 100644
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+++ b/demos/spectrum/3rdparty/fftreal/OscSinCos.hpp
@@ -0,0 +1,122 @@
+/*****************************************************************************
+
+        OscSinCos.hpp
+        Copyright (c) 2005 Laurent de Soras
+
+--- Legal stuff ---
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*Tab=3***********************************************************************/
+
+
+
+#if defined (OscSinCos_CURRENT_CODEHEADER)
+	#error Recursive inclusion of OscSinCos code header.
+#endif
+#define	OscSinCos_CURRENT_CODEHEADER
+
+#if ! defined (OscSinCos_CODEHEADER_INCLUDED)
+#define	OscSinCos_CODEHEADER_INCLUDED
+
+
+
+/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+#include	<cmath>
+
+namespace std { }
+
+
+
+/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+template <class T>
+OscSinCos <T>::OscSinCos ()
+:	_pos_cos (1)
+,	_pos_sin (0)
+,	_step_cos (1)
+,	_step_sin (0)
+{
+	// Nothing
+}
+
+
+
+template <class T>
+void	OscSinCos <T>::set_step (double angle_rad)
+{
+	using namespace std;
+
+	_step_cos = static_cast <DataType> (cos (angle_rad));
+	_step_sin = static_cast <DataType> (sin (angle_rad));
+}
+
+
+
+template <class T>
+typename OscSinCos <T>::DataType	OscSinCos <T>::get_cos () const
+{
+	return (_pos_cos);
+}
+
+
+
+template <class T>
+typename OscSinCos <T>::DataType	OscSinCos <T>::get_sin () const
+{
+	return (_pos_sin);
+}
+
+
+
+template <class T>
+void	OscSinCos <T>::step ()
+{
+	const DataType	old_cos = _pos_cos;
+	const DataType	old_sin = _pos_sin;
+
+	_pos_cos = old_cos * _step_cos - old_sin * _step_sin;
+	_pos_sin = old_cos * _step_sin + old_sin * _step_cos;
+}
+
+
+
+template <class T>
+void	OscSinCos <T>::clear_buffers ()
+{
+	_pos_cos = static_cast <DataType> (1);
+	_pos_sin = static_cast <DataType> (0);
+}
+
+
+
+/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/
+
+
+
+#endif	// OscSinCos_CODEHEADER_INCLUDED
+
+#undef OscSinCos_CURRENT_CODEHEADER
+
+
+
+/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/